Decorated paper and method of making same



April '5 1927.

D. A. SMITH ET AL DECORATED, PAPER AND METHOD OF MAKING SAME Filed July1925' gwlientois I Patented Apr. 5, 192 7.

l liNl li STATE Q-gra n:NT OFFICE; I

DANIEL A. SMITH, OF CHEVY CHASE. MARYLAND, ANl) CHARLES P. STIRLING, OFWASHINGTONLDISTRICT OI COLUMBIA, ASSIGNORSTO DISTRICT OF COLUMBIA PAPERMANUFACTURING COMPANY, OF WASHINGTON, DISTRICT OF COLUMBIA, A

CORPORATION OF VIRGINIA.

nricona'rnn mun AND METHOD or MAKING SAME.

Application filed July 14, 1925. Serial No. 43,514.

on paper by printing and in which there will a wide range of colormultitones and in which the decorations will be uniform in repetition ofdesign and color intensities.

A further object of the invention relates 10 to the production ofprinted decorated paper, while the paper is still in the making andpassing through the paper making machine. The invention is preferablypracticed by employing in a paper making machine a printing attachmentcomprising an etched or intaglio-engraved cylinder, in connection withan offset roll having a resilient surface, to' which thevcolor or inkfrom the etched or engraved cylinder is transferred; from the transferroll, the ink is applied to the wet paper sheet during its. passagethrough the paper making machine. 7 1

Printing directly on calendered paper from anengr'aved' design cylinderis Wellknownvinthe art. It has been found however that printing bydirect contact of the 4 wet paper sheet. with an engraved designcylinder will not produce uniform or sati s factory results, but anuneven spotty deposit of color, due to the roughness and unevenness ofthe paper sheet.

In the invention the printing contact is between the plain resilientsurface of the transfer roll and the wet pressed sheet, and thereby itispossible to deposit the color uniformly all over the paper sheetregardless of its rough or uneven surface.

Referring to the drawing, there are illustrated diagrammaticallyportions of a paper making machine to which has been applied thespecific printing attachment for the purpose Of carrying out theinvention.

The drawing shows press rollslO and 11, which convey, the felt 12 of apaper making I machine, and which carries the papersheet- 13 from thesheet" forming portion of the machine. The sheet 13 passes over guide.rolls 14 and 15 to the press rolls 16 and 17, from which it passes tothe 'driers 18 and 19.

When the paper-sheet passes around the press roll 17, it is brought intocontact with and 26, as is usual in intaglio printing inacolor.

the'transfer rolls 20 and 21, formed of red sili ent material, wellknown in the printing art, or surfaced with resilient material, such 5as rubber. These transfer rolls carry the ink" or color designs receivedfrom the design rolls 22 and 23. The design rolls may be formed in anysuitable manner, but it has been found that etched or intaglio engravedcylinders of metal produce the most satisfactory results. It will beunderstood that the rolls 22 and 23 are formed with depres- 'sionsconstituting pockets for the reception of ink or color in justsufiicient quantity to produce the required effects upon the paper, andthat these depressions vary in depth.

Ink or water color 24' is supplied to the design rolls and wiped by thedoctors 25 7 0 chines. It has been found that water colors or water-inkscan be successfully used with this invention. The sheet being wet has atendency to absorb water color readily, producing very soft and strikinge'fi'ects.

An accurate control of the color supply is obtained by the extent of thedepressions in the intaglio cylinder and by the varia; tions in thedepth thereof. The depth of the depressions controls the quantity of Thecontact'between the metal design cylinder and the resilient surface ofthe transfer roll produces a complete transference of thecolor tothetransfer roll and at the same time a slight spreading or distribution ofthe color upon the transfer roll. When the transfer roll comes intocontact with the vwet paper, the color is completely absorbed by .thepaper, the two surfaces being jointly sufficiently resilient and com-"pressible to cause contact to be established at every point and all ofthe color to be transferred from the plain resilient surface of the"transfer roll to the wet paper sheet. v

The wet condition of the paper. insures comremoving the excess watertherefrom. print-- ing upon the wet sheet by means of a roll having aresilient surface and receiving its ink or color design from an engravedmetal design cylinder, and subsequently drying the 2. A process ofmaking decorated paper by printing a design upon the paper while wet, bythe use of an intaglio engraved c'y-linder and an offset roll having aresilient m surface, the decorative design being transferred from theengraved cylinder to the offset roll and then to the wet paper sheet..

3. A process of making decorated paper by printing, comprising forming asheetand removing the excess water therefrom,

printing upon the wet sheet by means of a having a resilient surface andrece1v I 4. A decorated paper having a rough suri face and having prm dthereon uniform designs, free from uneven spotty deposits of color, bymeans of an intaglio engraved cylinder and an offset roll liavlngaresilient surface, the said designs being transferred from the engravedroll to the offset roll and then to the rou 11 surface of the pa er.

5. A decorate paper having a mug surface and having printed thereonuniform designs of blotches of contrasting colors in a wide range ofmultitones. free from uneven spotty deposits of color, by means of anint-aglio engraved cylinder and an offset roll having a resilientsurface, thesaid (lesigns being transferred from the engraved roll tothe offset roll and then to the rough surface of the paper.

tures.

DANIEIQA. SMITH. CHARLES P. STIRLING.

In testimony whereofwe aflixour signa-

